結果

問題 No.1640 簡単な色塗り
ユーザー fumofumofunifumofumofuni
提出日時 2021-08-06 23:24:59
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
TLE  
(最新)
AC  
(最初)
実行時間 -
コード長 5,277 bytes
コンパイル時間 2,537 ms
コンパイル使用メモリ 216,836 KB
実行使用メモリ 60,872 KB
最終ジャッジ日時 2024-06-29 16:23:05
合計ジャッジ時間 34,802 ms
ジャッジサーバーID
(参考情報)
judge1 / judge4
このコードへのチャレンジ
(要ログイン)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
6,812 KB
testcase_01 AC 2 ms
6,940 KB
testcase_02 AC 2 ms
6,944 KB
testcase_03 AC 2 ms
6,944 KB
testcase_04 AC 262 ms
50,584 KB
testcase_05 AC 260 ms
51,100 KB
testcase_06 AC 2 ms
6,940 KB
testcase_07 AC 2 ms
6,940 KB
testcase_08 AC 2 ms
6,944 KB
testcase_09 AC 2 ms
6,944 KB
testcase_10 AC 265 ms
28,328 KB
testcase_11 AC 203 ms
24,844 KB
testcase_12 AC 174 ms
22,836 KB
testcase_13 AC 427 ms
44,776 KB
testcase_14 AC 430 ms
43,560 KB
testcase_15 AC 119 ms
15,784 KB
testcase_16 AC 151 ms
21,960 KB
testcase_17 AC 353 ms
39,924 KB
testcase_18 AC 23 ms
6,940 KB
testcase_19 AC 172 ms
22,776 KB
testcase_20 AC 243 ms
26,956 KB
testcase_21 AC 181 ms
24,716 KB
testcase_22 AC 16 ms
6,940 KB
testcase_23 AC 268 ms
28,720 KB
testcase_24 AC 62 ms
13,012 KB
testcase_25 AC 173 ms
23,708 KB
testcase_26 AC 302 ms
37,372 KB
testcase_27 AC 110 ms
16,308 KB
testcase_28 AC 414 ms
43,388 KB
testcase_29 AC 319 ms
38,152 KB
testcase_30 AC 52 ms
8,684 KB
testcase_31 AC 1,847 ms
40,828 KB
testcase_32 AC 1,116 ms
33,120 KB
testcase_33 AC 598 ms
23,132 KB
testcase_34 AC 920 ms
28,132 KB
testcase_35 AC 487 ms
24,800 KB
testcase_36 AC 52 ms
8,420 KB
testcase_37 AC 86 ms
10,780 KB
testcase_38 AC 1,417 ms
34,736 KB
testcase_39 AC 253 ms
16,556 KB
testcase_40 AC 279 ms
16,944 KB
testcase_41 AC 878 ms
29,612 KB
testcase_42 AC 338 ms
19,888 KB
testcase_43 AC 392 ms
21,660 KB
testcase_44 AC 349 ms
20,428 KB
testcase_45 AC 222 ms
16,720 KB
testcase_46 AC 64 ms
9,508 KB
testcase_47 AC 33 ms
7,268 KB
testcase_48 AC 1,556 ms
34,184 KB
testcase_49 AC 11 ms
6,940 KB
testcase_50 AC 2 ms
6,940 KB
testcase_51 AC 2 ms
6,940 KB
testcase_52 TLE -
testcase_53 TLE -
07_evil_01.txt AC 1,469 ms
90,920 KB
07_evil_02.txt TLE -
権限があれば一括ダウンロードができます

ソースコード

diff #

#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(ll i=0;i<n;i++)
#define repl(i,l,r) for(ll i=(l);i<(r);i++)
#define per(i,n) for(ll i=(n)-1;i>=0;i--)
#define perl(i,r,l) for(ll i=r-1;i>=l;i--)
#define fi first
#define se second
#define pb push_back
#define ins insert
#define pqueue(x) priority_queue<x,vector<x>,greater<x>>
#define all(x) (x).begin(),(x).end()
#define CST(x) cout<<fixed<<setprecision(x)
#define rev(x) reverse(x);
using ll=long long;
using vl=vector<ll>;
using vvl=vector<vector<ll>>;
using pl=pair<ll,ll>;
using vpl=vector<pl>;
using vvpl=vector<vpl>;
const ll MOD=1000000007;
const ll MOD9=998244353;
const int inf=1e9+10;
const ll INF=4e18;
const ll dy[8]={1,0,-1,0,1,1,-1,-1};
const ll dx[8]={0,1,0,-1,1,-1,1,-1};
template <typename T> inline bool chmax(T &a, T b) {
  return ((a < b) ? (a = b, true) : (false));
}
template <typename T> inline bool chmin(T &a, T b) {
  return ((a > b) ? (a = b, true) : (false));
}

//公式Dinic;
template <class Cap> struct Dinic{
  public:
    Dinic() : _n(0) {}
    Dinic(int n) : _n(n), g(n) {}

    int add_edge(int from, int to, Cap cap) {
        assert(0 <= from && from < _n);
        assert(0 <= to && to < _n);
        assert(0 <= cap);
        int m = int(pos.size());
        pos.push_back({from, int(g[from].size())});
        g[from].push_back(_edge{to, int(g[to].size()), cap});
        g[to].push_back(_edge{from, int(g[from].size()) - 1, 0});
        return m;
    }

    struct edge {
        int from, to;
        Cap cap, flow;
    };

    edge get_edge(int i) {
        int m = int(pos.size());
        assert(0 <= i && i < m);
        auto _e = g[pos[i].first][pos[i].second];
        auto _re = g[_e.to][_e.rev];
        return edge{pos[i].first, _e.to, _e.cap + _re.cap, _re.cap};
    }
    std::vector<edge> edges() {
        int m = int(pos.size());
        std::vector<edge> result;
        for (int i = 0; i < m; i++) {
            result.push_back(get_edge(i));
        }
        return result;
    }
    void change_edge(int i, Cap new_cap, Cap new_flow) {
        int m = int(pos.size());
        assert(0 <= i && i < m);
        assert(0 <= new_flow && new_flow <= new_cap);
        auto& _e = g[pos[i].first][pos[i].second];
        auto& _re = g[_e.to][_e.rev];
        _e.cap = new_cap - new_flow;
        _re.cap = new_flow;
    }

    Cap flow(int s, int t) {
        return flow(s, t, std::numeric_limits<Cap>::max());
    }
    Cap flow(int s, int t, Cap flow_limit) {
        assert(0 <= s && s < _n);
        assert(0 <= t && t < _n);

        std::vector<int> level(_n), iter(_n);
        queue<int> que;

        auto bfs = [&]() {
            std::fill(level.begin(), level.end(), -1);
            level[s] = 0;
            while(!que.empty())que.pop();
            que.push(s);
            while (!que.empty()) {
                int v = que.front();
                que.pop();
                for (auto e : g[v]) {
                    if (e.cap == 0 || level[e.to] >= 0) continue;
                    level[e.to] = level[v] + 1;
                    if (e.to == t) return;
                    que.push(e.to);
                }
            }
        };
        auto dfs = [&](auto self, int v, Cap up) {
            if (v == s) return up;
            Cap res = 0;
            int level_v = level[v];
            for (int& i = iter[v]; i < int(g[v].size()); i++) {
                _edge& e = g[v][i];
                if (level_v <= level[e.to] || g[e.to][e.rev].cap == 0) continue;
                Cap d =
                    self(self, e.to, std::min(up - res, g[e.to][e.rev].cap));
                if (d <= 0) continue;
                g[v][i].cap += d;
                g[e.to][e.rev].cap -= d;
                res += d;
                if (res == up) break;
            }
            return res;
        };

        Cap flow = 0;
        while (flow < flow_limit) {
            bfs();
            if (level[t] == -1) break;
            std::fill(iter.begin(), iter.end(), 0);
            while (flow < flow_limit) {
                Cap f = dfs(dfs, t, flow_limit - flow);
                if (!f) break;
                flow += f;
            }
        }
        return flow;
    }

    std::vector<bool> min_cut(int s) {
        std::vector<bool> visited(_n);
        queue<int> que;
        que.push(s);
        while (!que.empty()) {
            int p = que.front();
            que.pop();
            visited[p] = true;
            for (auto e : g[p]) {
                if (e.cap && !visited[e.to]) {
                    visited[e.to] = true;
                    que.push(e.to);
                }
            }
        }
        return visited;
    }

  private:
    int _n;
    struct _edge {
        int to, rev;
        Cap cap;
    };
    std::vector<std::pair<int, int>> pos;
    std::vector<std::vector<_edge>> g;
};

int main(){
  ll n;cin >> n;
  Dinic<ll> dn(n*2+2);
  ll s=n*2,t=s+1;
  rep(i,n){
    ll a,b;cin >> a >> b;a--;b--;
    dn.add_edge(s,i,1);
    dn.add_edge(i,a+n,1);
    dn.add_edge(i,b+n,1);
  }
  rep(i,n)dn.add_edge(i+n,t,1);
  ll p=dn.flow(s,t);
  if(p!=n)cout << "No" <<endl,exit(0);
  cout << "Yes" <<endl;
  for(auto es:dn.edges()){
    if(!es.flow)continue;
    if(es.from>=n)continue;
    cout << es.to+1-n <<endl;
  }
}
0